Runs Rollup bundler and returns structured bundle output with errors and warnings.
AI agents invoke rollup to trigger actions in Lint. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.
The tool runs the Rollup bundler, which is an execution of an external process/tool. While primarily used for bundling JavaScript, it executes code and can trigger arbitrary plugin hooks and scripts defined in the project configuration. This places it in the Execute category. Severity is medium as misuse could execute malicious build scripts, but the blast radius is generally limited to the build environment.
From the tool's definition 'Runs Rollup bundler' — explicitly executes an external build tool process
Documented attack patterns abuse exactly the kind of access rollup gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Lint, and nothing reaches the server without passing your rules. This is the rule we recommend for rollup:
{
"version": "1",
"default": "deny",
"tools": {
"rollup": {
"limits": [
{
"counter": "rollup_rate",
"window": "minute",
"max": 10,
"scope": "grant"
}
]
}
}
}rollup stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.
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Runs Rollup bundler and returns structured bundle output with errors and warnings. It is categorised as a Execute tool in the Lint MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Register the Lint MCP server in PolicyLayer and add a rule for rollup: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Lint. Nothing to install.
rollup is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the rollup rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for rollup. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
rollup is provided by the Lint MCP server (Dave-London/Pare). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Lint, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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202 Lint tools catalogued and risk-classified — across an index of 43,000+ MCP servers.